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Finding the Fourth Proportional to 153,520.92, 229,948.08 and 74,469

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Solution

The fourth proportional to 153,520.92, 229,948.08 and 74,469 is: 111,541.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,520.92 : 229,948.08 = 74,469 : x
  2. Step 2: Convert to fraction form
    153,520.92/229,948.08 = 74,469/x
  3. Step 3: Cross multiply
    153,520.92x = 229,948.08 × 74,469
  4. Step 4: Simplify right side
    153,520.92x = 17,124,003,569.52
  5. Step 5: Solve for x
    x = 17,124,003,569.52/153,520.92
  6. Step 6: Final answer
    x = 111,541.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.